Method of manufacturing oil gas



Jan. 8, 1929.

A. J. BASSETT METHOD OF MANUFACTURING OIL GAS Filed NOV. 12, 1925 iii ATMR/VEK Patented Jan. 8, 1929.

UNITED STATES oFF cE.

ALVIN J. BASSETT, OF MIIJWAUKEE, WISCONSIN, ASSIGNOR TO THE BRUCE MACBETH ENGINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

METHOD OT MANUFACTURING OIL. GAS.

Application filed November 12, 1925. Serial No. 68,544.

My invention relates to methods of controlling the volume of oil gas produced n a processof gas manufacture, where1n air and oil, are mixed, introduced lnto a chamberythere converted intocombustible gas and then withdrawn from said chamber through a discharge duct connected with an internal The object of the invention 'is to vary the volume of oil gas manufactured in accordance with the demand therefor made by the consuming device and efl'ect such variation in a simple and expeditious manner. I

This object I accomplish 1n the particular manner hereinafter described, by providing unloading means for the air supphed for making the gas and for producing the pressure upon the oil, and vary ng the amount of air unloaded by means of a regulator controlled by the pressure in said duct whereby the amount of air and oilsupplied will-vary at a rate inversely proportionalto such pressure. 1

The said invention consists of a method Fig. 2 represents, upon an enlarged scale,

an axial section of the regulator forming part of the apparatus. a

In the illustrated device a converter 1 of the t pe shown and described in my pending application Serial No. 717,071, filed May 31st, 1924, is provided and supplied from the mixing tube 2 with a mixture of oil and air. The oil is supplied from a pipe 3 connected with' the oil tank 4 which is supplied with air under pressure from branch pipe 5 connected with the main air pipe 6 which is supplied from the outlet of the air pump 7, which sup-- plies a constant pressure. I

This oil is discharged into the mixing tube "simultaneously with air from the air pipe 8.

This latter pipeis' connected with a chamber 9 which is heated by the produced gas emanating'from the converter which chamber receives its air supply from the main air pipe .6. The plroduced gas passes from the converter t rough a main outlet pipe 10 into a scrubber 11, through a; pipe 12 into a tar extractor 13 and thence into the main gas delivery pipe 14 which leads to a furnace 26, a gas engine or other gas utilizing apparatus which is to be supplied withsuch' gas. -The construction thus far describe'd is similar to that of my above-mentionedapplication.

As is well known, the demand upon the supply of the produced gas varies. In the case of an internal combustion engine,'it varies with the load upon the engine, and in the case of a furnace it varies as the furnace valves are opened or closed to supply more or less gas .thereto during its operation.

In-order to increase or decrease the supply in accordance with the demand, I provlde the above-described apparatus with the following accessories.

The main air-pipe 6 is connected nearthe pump 7 by means ,of a pipe 15 with the side of the valve chamber in the casing of a valve 16, the bottom of such chamber being connected with a pipe 17 whose lower end is connected with the air inlet pipe 18 of the pump 7, said inlet pipe communicating with the atmosphere. The movable member 19 of the valve, Fig. 2, controls communication between the pipes 15 and 17, and it will be seenthat when valve 16 is open, air will be unloaded or diverted from pi 6 through ipes' 15 and 17 and go back to tii: pump, sai two pipes together forming an unloading duct. This results in the discharge finally into chamber 9 from pipe 6, and hence into the converter from the mixing. pipe 2, 'ofa given amount of air, such amount depending upon the size of opening in the valve 16 and hence the amount of air which is unloaded. When said valve 16 is closed, a maximum, and when wide open a minimum ofair will be supplied to said converter. a

The pump 7 is a constant displacement down from maximum to zero as a minimum,

whereby the load on the pump and the cost of operating same is accordingly reduced. Thusthe working air pressure, or the air pressure effectively used, isthrottled all the time inversely proportional to the demands on the gas-making apparatus. In other words, the load on the pump 7 is in proportion to the oil-gas delivery from the pipe 14.

' Instant control of the gas-making operation is thus afforded. l

. Connected with the movable valve member 19 is a'diaphragm 20 of a regulator 21 whose interior pressure chamber 21 is divided into two compartments by said diaphragm. "One of these compartments communicates with one end of a re ulator pipe 22 whose other nd is connecte withthe main gas pipe 14 opening, and vice versa.

so that'when the pressure in'sald gas pi e falls, the diaphragm moves to actuate tie valve member 19 to close or decrease the valve In operation, therefore, whenv demand for gas increases, the pressure in oil-gas 'delivery pipe 14 decreases, the opening in the valve 16 is diminished and the amount of air delivered to the converter increases, the air pressure in pipe 6 increasing coincidentally.

Such increase of air pressure is communicated to the oil in tank 4 and a corresponding increase of the oil supply and a corresponding increase in the production of gas is effected.

When the demand for gas diminishes the opening invalve 16-is increased, the amount of air and oil diminished and theamou'nt of gas produced isdecreased, as will'no w be apparent. I

It will therefore be observed that the amount of gas produced varies at a rate in- 'versely proportional-to the pressure in the main gas outlet pipe 14.

What I claim is: 1. The method otmanufac'turing oil gas and regulation of the production thereof which consists, in maintaining an oil suppply,

maintaining an air supply in communication with means adapted to develop a pressure different from atmospheric pressure, conveying theair so acted upon and oil to a mixer, in troducing the mixture into a converter, convertingthe mixture into oil gas, and withdrawing the oil gas from' the converter through a discharge duct, the latter being subject-to demands for oil gas, air being continuously unloaded from the air-conveying means intermediate the pressure developing means "and the mixer in amounts nversely proportionate to the demands, and the oil working air pressure which remains after said unloading. operation.

2. The method of manufacturing oil gas and regulation of the production thereof being conveyed to the mixer by the actual which consists, in maintaining an oil supply,

maintaining an air supply in communication with means adapted to develop a pressure difi'erent from atmospheric pressure, conveymg the air so acted upon and 011 toa mixer,

introducing the 'mixture into-a converter, converting the mixture into oil' gas, andwithdrawing the oil gas from the converter through a discharge duct, the latter being subject to demands for oil gas, air being continuously diverted, in amounts inversely proportionate to the demands, from, the air-conveying-means back to the pressure-developing means, and the oil being conveyed to the mixer by the actual working air pressure which remains after said diverting operation.

Signed by me this j31stday of October,

' ALVINJ. nassn'rr. 

